/// <summary>
/// 选中边线
/// </summary>
/// <param name="edge">IEdge Interface</param>
/// <param name="Append">true to Append</param>
/// <param name="Mark">set selection mark</param>
/// <returns></returns>
/// <remarks>
/// 将IEdge 转换为 IEntity 然后调用IEntity的 Select2方法
/// </remarks>
public static bool Select2(this IEdge edge, bool Append, int Mark)
{
return(edge.AsIEntity().Select2(Append, Mark));
}